Some blazes eased as favorable weather conditions spread along the southeast of the country with the Rural Fire Service downgrading the danger level from catastrophic to high.
Sussex Inlet on the south coast of Australia's New South Wales is the latest area to be affected by fires that have raged across parts of the country for six days.
Broadcaster Nine Network reported that an estimated 10,000 sheep have been killed across New South Wales.
Australia, the world's driest inhabited continent, is particularly vulnerable to bushfires, fuelled each summer by extreme heat and by what scientists say is creeping climate shift blamed for hotter average temperatures globally.
Authorities warned earlier in the Australian summer that much of the country faced extreme fire conditions this season, after several years of cooler conditions that had aided forest growth, but also created tinder dry fire fuel conditions.